The camera may show the security policy pop up due to many factors but the following can be marked as the main:
Restart the Phone Without SIM and SD Card
The camera issue could be a result of a temporary glitch of camera-related phone modules e.g., a corrupt directory on the SD card where the camera is configured to save the images, and restarting the phone without SIM/SD Card may solve the camera problem.
Update the OS of the Phone to the Latest Build
Incompatibility between the outdated phone’s OS and other modules may cause the camera security issue at hand. In this context, updating the phone’s OS to the latest build may solve the camera issue.
Clear Cache and Data
The camera’s security policy issue could be a result of the corrupt cache and data of the camera app, phone app, or security device, and clearing the same may solve the problem.
Clear the Cache and Data of the Camera & Phone App
Clear the Cache and Data of the Device Security
Disable the Camera App in the Secure Wi-Fi Feature
Secure Wi-Fi lets you filter out the unsecured traffic on an unsecured network and if the Camera app or any of the camera-related apps (like Snapbridge) is configured to use the secure Wi-Fi feature, then the camera might fail to launch with a security policy pop-up. In this context, disabling the Camera app in the Secure Wi-Fi feature may solve the problem.
Enable or Disable the Phone’s Sensors
The camera might show the security policy issue if the phone’s sensors are not properly configured e.g. if the sensors are disabled in the phone’s developer options, then the camera might not work as the phone “thinks” the camera as a sensor.
Reset Camera Settings to Default
The security policy issue at hand could be a result of a misconfiguration of the camera settings and resetting the same to the factory defaults may solve the problem. This method may not be possible for users who even fail to launch the Camera application. In such a case, doing the same through the phone’s settings menu may solve the problem.
Reset the Phone’s Settings to the Defaults
A mere misconfiguration of the phone’s settings may lead to the issue of security policy restricting the use of the camera. In such a case, resetting the phone’s settings to the defaults may solve the problem. Keep in mind you may lose many of the customizations made to the settings.
Test the Phone’s Camera in Safe Mode
The restriction of the camera by a security policy could be a result of a phone’s customization (like a non-stock launcher) that is interfering with the phone’s camera modules. In such a case, testing the phone in safe mode may solve the problem as it reset some of the phone’s customization to the defaults.
Uninstall the Conflicting 3rd Party App
The camera might show the restricted policy issue if a 3rd party app is restricting a user’s access to the phone’s camera. In this scenario, you can fix the security policy that restricts the use of a camera by uninstalling the conflicting 3rd party apps. If the issue is still there, check if installing another camera app on the phone solves the problem.
Reset Phone to Factory Defaults
If the above did not work, then a user may have been left with no other option but to perform a factory reset of the phone. If none of the above did the trick for you, check if the phone is a corporate device. If so, then contact the IT department of the corporate organization to check if the issue can be resolved. If the device is not a corporate device but was purchased as a used device, then check if it has an application starting with MDM (mobile device management). If so, you may contact the reseller to remove the MDM application. Keep in mind many corporations use MDM applications to control the user’s access to different device features. If an MDM application is present on the phone and the reseller cannot be contacted, then you may root the device (at your own risk) and check if deleting the files in the \efs\security directory (you may use Root Explorer) solves the problem.
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